If you already have the b20 block go for the b20 vtec.
I see you are in Hollywood, FL so you are close to Stuart. There is a shop there that milled, cut the valve guide seals, and angeled valves. I cannot remember their shop name but they do all the headwork for Titan Motorsport in Orlando. I would highly recommend them to do the headwork. The price was very reasonabile as well.
As for the pnp work I have my friend David do that for me in Rockledge.
If you are interested I can get the shop name that is in Stuart for you.
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if you can only race me in a straight line then whats the point 
...91 SMF SCCA
http://www.flickr.com/photos/8341770@N07/5601083432/http://www.flickr.com/photos/8341770@N07/5601083432/ by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production